another inserting image

Hi, need help with inputing images to mysql. I read lots of previous thread about it but couldn't find the proper answer. this is code for my basic form:

<form id="form1" name="form1" method="POST" action="<?php echo $editFormAction; ?>" enctype="multipart/form-data">
       <table width="100%" border="1" cellspacing="1" cellpadding="1">
        <tr>
          <td>tytul</td>
          <td><label>
            <input type="text" name="tytul" id="tytul" />
          </label></td>
        </tr>
        <tr>
          <td>opis</td>
          <td><textarea name="opis" id="opis" cols="45" rows="5"></textarea></td>
        </tr>
        <tr>
          <td>telefon</td>
          <td><label>
            <input type="text" name="telefon" id="telefon" />
          </label></td>
        </tr>
        <tr>
          <td>email</td>
          <td><label>
            <input type="text" name="email" id="email" />
          </label></td>
        </tr>
        <tr>
          <td>image</td>
          <td><label>
            <input type="file" name="image" id="image" />
          </label></td>
        </tr>
        <tr>
          <td>&nbsp;</td>
          <td><label>
            <input type="submit" name="submit" id="submit" value="Wyślij" />
          </label></td>
        </tr>
      </table>
       <input type="hidden" name="MM_insert" value="form1" />
      </form>

this is my insert code:

$editFormAction = $_SERVER['PHP_SELF'];
if (isset($_SERVER['QUERY_STRING'])) {
  $editFormAction .= "?" . htmlentities($_SERVER['QUERY_STRING']);
}

if ((isset($_POST["MM_insert"])) && ($_POST["MM_insert"] == "form1")) {
  $insertSQL = sprintf("INSERT INTO oferujeP (tytul, opis, telefon, email, image) VALUES (%s, %s, %s, %s, %s)",
                       GetSQLValueString($_POST['tytul'], "text"),
                       GetSQLValueString($_POST['opis'], "text"),
                       GetSQLValueString($_POST['telefon'], "text"),
                       GetSQLValueString($_POST['email'], "text"),
                       GetSQLValueString($_POST['image'], "text"));

  mysql_select_db($database_hull, $hull);
  $Result1 = mysql_query($insertSQL, $hull) or die(mysql_error());

  $insertGoTo = "ogloszenia1.php";
  if (isset($_SERVER['QUERY_STRING'])) {
    $insertGoTo .= (strpos($insertGoTo, '?')) ? "&" : "?";
    $insertGoTo .= $_SERVER['QUERY_STRING'];
  }
  header(sprintf("Location: %s", $insertGoTo));

and after submitting - "Column 'image' cannot be null" that column is set as BLOB what did i wrong? - plzzz HELP